A semi-automatic coupling pre-tightening device

Abstract

The invention relates to the field of mechanical equipment for steel pipe deep processing, in particular to a semi-automatic coupling pre-screwing device. The coupling pre-screwing device comprises a base, an elevator is arranged on the base, one end of the elevator is connected with a lifting frame, the lifting frame is connected with a floating frame through a spring, two sides of the floating frame are connected with a force arm, the force arm is connected with two ends of an air cylinder, and a clamping plate is arranged at the upper end of the force arm. The air cylinder is used for acting on the clamping plate on the force arm to fix a coupling on the floating frame, and meanwhile the floating frame is connected with a lifting frame structure connected with the elevator through the spring. The elevator of the structure can push the lifting frame to move up and down to be adapted to couplings with different pipe diameters, and through the spring, the floating frame can move up and down, left and right and front and back to facilitate centering of the couplings and smooth screwing-connection of the couplings and the centers of oil casing pipes. Meanwhile, rolling wheels are installed on the base, so that the whole device can move on a guide rail for steel pipe aligning. The semi-automatic coupling pre-screwing device is simple in structure, low in manufacturing cost, strong in practicability, flexible in operation and easy to operate, shortens production cycles, and improves production efficiency.

Description

technical field [0001] The invention relates to the field of mechanical equipment for deep processing of steel pipes, relates to a coupling pre-tightening device, in particular to a semi-automatic coupling pre-tightening device for oil casing couplings. Background technique [0002] The coupling pre-tightening machine is a device for quickly screwing the coupling into the oil casing. After this process is completed, the coupling machine is tightened and the torque is calibrated. The cost of fully automatic pre-tightening machines is high. Many manufacturers prefer to use manual screwing instead of buying expensive equipment, so most manufacturers use manual tightening. However, manual pre-tightening also has disadvantages. Smaller couplings can be completed by one person, but it is difficult for one person to complete the couplings with large diameter and wall thickness. It is wasteful, and it is more difficult to cooperate when there are too many people. Contents of the ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a simple and reliable semi-automatic coupling pre-tightening device for oil casing couplings in view of the shortcomings in the prior art, which can overcome the defects of manual operation and meet the requirements of the production process. requirements, while shortening working hours and increasing production

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